Sectional type wind power coal separator

Abstract

The utility model relates to a wind power coal separator, belongs to the technical field of coal processing, and particularly discloses a sectional type wind power coal separator which comprises a machine frame, a feeding mechanism, a separation main machine and a discharging mechanism, and the feeding mechanism, the separation main machine and the discharging mechanism are sequentially arranged on the machine frame in the material conveying direction. And an air supply device is communicated below the sorting host. The sorting main machine comprises a first sorting main machine body, a second sorting main machine body and a third sorting main machine body which are sequentially arranged in the material conveying direction, the three sections of sorting main machine bodies are each provided with an independent suspension adjusting device and an air supply device, and each section of sorting main machine body is provided with a vibration exciter and a gangue discharging outlet. The vibration force, the wind force, the inclination angle and the like of each sorting main machine can be independently adjusted. The fine coal sorting machine is reasonable in design, the sorting main machine is arranged to be of a sectional structure with parameters capable of being adjusted independently, the quality of sorted fine coal is improved, and the fine coal sorting machine is suitable for sorting coal briquettes and gangues with different granularities.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wind force coal separating machine, in particular to a sectional wind force coal separating machine. BACKGROUND

[0002] Dry coal separation is a coal separation method using air instead of water as separation medium, and the wind force coal separating machine is a device applying dry coal separation. The bed surface of the separation bed of the existing wind force coal separating machine is a screen with a plurality of holes, and the separation bed is provided with a wind chamber below, and air is supplied by a blower. The separation bed is arranged obliquely and provided with a vibration generating device, and the material is conveyed to the screen of the separation bed by a belt and reaches a loose state of fluidization under the combined action of the exciting force of the vibration motor and the air force. The gangue with large density and weight gradually sinks to the bottom of the material layer under the action of gravity and moves to the high rear part of the separation bed under the action of the exciting force of the vibration motor, and then is discharged from the gangue end, at this time, the material with small density gradually floats to the upper part of the material layer under the mutual extrusion action between the upward air force and the material, and moves to the low front part of the separation bed under the combined action of the exciting force of the vibration motor, gravity and the inclination angle of the separation bed, and is discharged from the clean coal end, so as to realize the separation of the material with large density and the material with small density and achieve the purpose of material separation.

[0003] The wind force coal separating machine has the characteristics of relatively small floor space, strong adaptability and low requirement on production environment, and has been widely applied in the coal industry. In the utility model patent with the publication number CN 203494628 U, a screen under chamber air jigging coal washer is disclosed, which comprises first, second and third jigging chambers connected and communicated, and each jigging chamber is provided with a gangue discharge outlet, so that the raw coal is filtered through the three jigging chambers to realize the separation of clean coal and gangue. This method is essentially to design only the separation bed as a sectional type, which is a lengthened design of the separation bed, and can improve the coal separation quality to a certain extent. However, in actual production, the following problems still exist: the vibration amplitude of the exciter and the air force intensity are the same during the process of the raw coal material from the feeding port to the discharge port, and during the movement of the material from the rear part of the separation bed to the front part, the large gangue can be continuously discharged, but when the material approaches the discharge port, the small gangue and clean coal cannot be further separated due to the unchanged vibration force and air force, so that the clean coal at the discharge port contains a large amount of small gangue that cannot be separated, which seriously affects the precision of the clean coal, and the device cannot be widely applied to raw coal materials of various forms and particle sizes. UTILITY MODEL CONTENTS

[0004] In order to solve the above problems in the prior art, the utility model aims to provide a sectional wind force coal separating machine, which adjusts the movement process of the material in the separation bed in stages to improve the quality of the clean coal, so as to be applicable to the separation of coal blocks and gangues with different particle sizes in a larger range.

[0005] In order to achieve the above object, the utility model adopts the technical scheme as follows: a sectional type wind power coal separator, including frame, the feeding mechanism, the sorting host computer, the discharging mechanism are sequentially arranged on the frame along the material conveying direction, the sorting host computer is hung in the frame below through the suspension adjusting device, and the sorting host computer below is communicated with the air supply device; the sorting host computer is three section split type structure, including first sorting host computer, second sorting host computer, third sorting host computer sequentially arranged along the material conveying direction; the feeding mechanism is communicated with the first sorting host computer, and the discharging mechanism is fixedly arranged at the material outlet of the third sorting host computer; three section sorting host computer is equipped with independent suspension adjusting device, air supply device, and is provided with the exciter and the gangue discharge outlet on each section sorting host computer.

[0006] As the limitation of the utility model: the sorting host computer includes the sorting chamber of the upper part rectangular box body and the air chamber connected with the air supply device of the lower part, and the sorting chambers of the first sorting host computer, the second sorting host computer and the third sorting host computer are communicated, and the sorting chambers of the three section sorting host computers are connected through the soft connecting body.

[0007] As the limitation of the utility model: the bottom surface of the sorting chamber is the sorting bed with a plurality of ventilation holes, the front end of the sorting bed is provided with the partition plate for separating the three section sorting bed, and the rear end of the sorting bed is provided with the gangue discharge outlet for discharging the gangue on each section sorting bed.

[0008] As the limitation of the utility model: the height of the sorting bed gradually decreases from the feeding direction to the discharging direction, and the height difference between the sorting beds is 15cm to 25cm.

[0009] As the limitation of the utility model: the steel wire rope with adjustable length is connected between the suspension adjusting device and the corresponding sorting host computer, and the steel wire rope is fixedly connected to the four corners of the upper end of the sorting host computer; the length of the steel wire rope can be adjusted by the suspension adjusting device to control the height and the inclination angle of the corresponding sorting host computer.

[0010] As the limitation of the utility model: two exciters are respectively arranged on the first sorting host computer, the second sorting host computer and the third sorting host computer.

[0011] As the limitation of the utility model: the air supply device is connected with the sorting host computer through the soft connecting pipeline, and the air supply device can provide continuous or pulsating air supply with adjustable air volume.

[0012] Due to the adoption of the above technical scheme, the utility model compared with the prior art, the beneficial effects obtained are as follows:

[0013] (1) the utility model discloses the sorting host computer is divided into three independent stages, and the first sorting host computer, second sorting host computer, third sorting host computer all are equipped with single exciter and air supply device, make the vibration amplitude of sorting bed, wind intensity etc. can be individually adjusted in a certain range: the first sorting host computer is as the preliminary gangue removal stage, and its vibration force and wind force can be set to a larger value, and the gangue of large granularity is discharged, and the vibration force and wind force are adjusted respectively according to the form characteristics of the material of the second sorting host computer, third sorting host computer, so that the gangue of smaller granularity is further discharged, to avoid the problem that the coal block of larger size is contained in the gangue discharged in the second stage, and the small gangue is contained in the clean coal discharged after the third stage, so that the quality of clean coal is improved;

[0014] (2) the vibration force of the sorting bed of each stage and the wind force of the air supply device can be individually adjusted in the utility model, and in the coal preparation process of raw coal with large gangue granularity difference, the stage adjustment can be carried out according to the actual gangue form, so as to meet the sorting of coal blocks and gangues of different granularity, that is, the adjustable range of sorting granularity is large, compared with the coal separator in the prior art, the application range of the feed is wide, and the coal separator is suitable for coal preparation of various coal mines;

[0015] (3) the suspension adjusting device on the first sorting host computer, second sorting host computer, third sorting host computer can set the sorting bed to different inclination angles, so that the gangue of each stage is discharged more accurately, and the sorting bed of each stage has a height difference, and the height decreases in turn, and the height difference is beneficial to the smooth operation of the material on the sorting bed from the rear to the front, so as to further improve the coal preparation quality;

[0016] (4) the split type host computer design of the utility model makes the large volume sorting host computer into three smaller parts, which is more conducive to transportation and installation, and each part is placed in place, and then the remaining parts are installed and connected.

[0017] In summary, the utility model discloses reasonable design, and the design of the sectional type, split type sorting host computer can carry out the separate adjustment of the movement process of the material on the sorting bed in stages, so as to improve the quality of clean coal, and be suitable for the sorting of coal blocks and gangues of various granularity. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0019] Figure 1 It is the structure schematic drawing of the utility model embodiment.

[0020] In the diagram: 1-frame, 2-first sorting host, 3-second sorting host, 4-third sorting host, 5-flexible connector, 6-suspension adjustment device, 7-wire rope, 8-air supply device, 9-vibrator, 10-slag discharge outlet, 11-air chamber, 12-flexible connector pipe. Detailed Implementation

[0021] The preferred embodiments of this utility model are described below with reference to the accompanying drawings. It should be understood that the segmented air-powered coal preparation machine described herein is a preferred embodiment and is only used for illustration and explanation of this utility model, and does not constitute a limitation thereof.

[0022] The directional terms or positional relationships used in this utility model, such as "upper," "lower," "front," and "rear," are based on the positional relationships in the accompanying drawings of this utility model. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or mechanism must have a specific orientation, or that it must be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the content protected by this utility model. Example

[0023] This implementation example Figure 1 The diagram shows a segmented pneumatic coal preparation machine, comprising a frame 1 (partially shown), and a feeding mechanism, a sorting host, and a discharging mechanism sequentially arranged on the frame 1 along the material conveying direction. The sorting host has a segmented structure, specifically divided into a first sorting host 2, a second sorting host 3, and a third sorting host 4. The feeding mechanism (not shown) is connected to the first sorting host 2, and the discharging mechanism (not shown) is fixed at the material outlet of the third sorting host 4. The material is sorted sequentially through the first sorting host 2, the second sorting host 3, and the third sorting host 4, ultimately selecting clean coal products.

[0024] To enable different vibration forces to be applied to the three sorting units, the main body of each sorting unit is connected by a flexible connector 5. Each of the three sorting units is equipped with its own independent suspension adjustment device 6 and air supply device 8. Each section of the sorting unit is equipped with a vibrator 9 and a waste discharge outlet 10.

[0025] Specifically, the sorting host includes a sorting chamber in the form of a rectangular box at the upper portion and a wind chamber 11 connected with the air supply device 8 at the lower portion, the sorting chambers of the first sorting host 2, the second sorting host 3 and the third sorting host 4 are communicated, the sorting chambers of the three-stage sorting host are connected through a soft connecting body 5, and the sorting host is arranged in an inclined manner with the front end being lower and the rear end being higher. The bottom surface of the sorting chamber is a sorting bed provided with a plurality of ventilation holes (the internal structure is not shown), and a partition plate is arranged at the front end of the sorting bed to separate the three-stage sorting bed. The partition plate can block the movement of the material back to the rear end during the material screening process. The height and angle of the partition plate can be achieved by using the existing technical means. A gangue discharge outlet 10 is arranged at the rear end of the sorting bed to discharge the gangue on the sorting bed. The gangue with large density and weight gradually sinks to the bottom of the material layer under the action of gravity and moves to the high direction of the rear end of the sorting bed under the action of vibration force, and then is discharged through the gangue discharge outlet 10. In production, in order to enable the material to move forward better, the height of the three-stage sorting bed can be gradually reduced from the material inlet direction to the material outlet direction, and the height difference between the sorting beds is arranged in the form of a stepped shape with a drop of 15-25 cm, which can be preferably arranged as 20 cm.

[0026] Each sorting host is hung below the rack 1 through a corresponding suspension adjusting device 6, the suspension adjusting device 6 and the corresponding sorting host are connected through a length-adjustable steel wire rope 7, and the steel wire rope 7 is fixedly connected to the four corners at the upper end of the sorting host; the suspension adjusting device 6 can adjust the length of the steel wire rope 7 to control the height and the inclination direction and angle of the sorting host, and the suspension adjusting device 6 adjusts the length of each steel wire rope 7 by using the existing technology. The three sorting hosts are arranged in a downward inclined manner along the material conveying direction, and the inclination angle with the horizontal plane can be selected according to actual production.

[0027] Two vibration exciters 9 are arranged on the first sorting host 2, the second sorting host 3 and the third sorting host 4 respectively, the vibration exciters 9 are used to provide vibration force for the sorting bed to separate the material, and the installation position and angle of the vibration exciters 9 can be arranged according to conventional technical means.

[0028] The air supply device 8 is communicated below each sorting host, the air supply device 8 is connected with the sorting host through a soft connecting pipeline 12, the air supply device 8 can provide continuous or pulsating air supply with adjustable air volume, the continuous air or pulsating air can act on the material through the ventilation holes on the sorting bed, and the coal and the gangue are separated by using the method combining the air force and the vibration force.

[0029] When the embodiment is used, the first separation host 2, the second separation host 3 and the third separation host 4 of the sectional wind force coal separator are installed and connected in sequence, the parameters of each separation host are adjusted according to the characteristics of the coal and mineral materials to be separated, including the vibration force of the vibration exciter 9, the wind force of the air supply device 8, the inclination angle of the separation host and the like, and these parameter settings can also be adjusted according to the gangue discharge and clean coal output during the material separation process. The material continuously enters the first separation host 2 from the feeding mechanism, the first separation host 2 serves as the preliminary gangue discharge stage, the vibration force and the wind force can be set to a larger value, and the gangue with a large particle size is discharged, the vibration force and the wind force are adjusted according to the form characteristics of the material at the second separation host 3 and the third separation host 4, so as to further discharge the gangue with a smaller particle size, and the problems that the coal block with a larger size is contained in the gangue discharged in the second stage and the small gangue is contained in the clean coal discharged after the third stage are avoided, so as to improve the clean coal quality.

Claims

1. A sectional pneumatic coal cleaning machine, comprising a frame, a feeding mechanism, a main cleaning machine and a discharging mechanism arranged in sequence along a material conveying direction on the frame, the main cleaning machine being hung below the frame through a suspension adjusting device, and a wind supply device being communicated below the main cleaning machine. The sorting host is a three-section structure, including a first sorting host, a second sorting host and a third sorting host arranged in sequence along the material conveying direction; the feeding mechanism is communicated with the first sorting host, and the discharging mechanism is fixedly arranged at the material outlet of the third sorting host; the three-section sorting host is provided with independent suspension adjusting devices and air supply devices, and each section of the sorting host is provided with an exciter and a gangue discharging outlet.

2. A sectional pneumatic coal concentrator according to claim 1, characterized in that: The sorting host includes a sorting chamber in the form of a rectangular box and an air chamber connected with the air supply device, and the sorting chambers of the first sorting host, the second sorting host and the third sorting host are communicated, and the sorting chambers of the three-section sorting host are connected through soft connecting bodies.

3. A sectional pneumatic coal concentrator according to claim 2, characterised in that: The bottom surface of the sorting chamber is a sorting bed provided with a plurality of ventilation holes, the front end of the sorting bed is provided with a partition plate for separating the three-section sorting bed, and the rear end of the sorting bed is provided with a gangue discharging outlet for discharging the gangue on the sorting bed.

4. A sectional pneumatic coal concentrator according to claim 3, characterised in that: The height of the sorting bed gradually decreases from the feeding direction to the discharging direction, and the height difference between the sorting beds is 15-25 cm.

5. A sectional pneumatic coal concentrator according to any one of claims 1 to 4, characterized in that: The suspension adjusting device is connected with the corresponding sorting host through a steel wire rope with adjustable length, and the four corners of the upper end of the sorting host are fixedly connected with the steel wire rope; the suspension adjusting device can adjust the length of the steel wire rope to control the height and the inclination angle of the corresponding sorting host.

6. A sectional pneumatic coal concentrator according to claim 5, characterised in that: The first sorting host, the second sorting host and the third sorting host are respectively provided with two exciters.

7. A sectional pneumatic coal concentrator according to any one of claims 1 to 4, 6, characterised in that The air supply device is connected with the sorting host through a soft connecting pipeline, and the air supply device can provide continuous or pulsating air supply with adjustable air volume.

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